Re: Printk output on console
From: srinivas naga vutukuri
Date: Tue Dec 21 2004 - 11:26:30 EST
You can go through, one of the help link on the log msgs...
I think, they(kernel printk's) are directing to the console only...
Or you can observe, initially while booting it up, after console initiation
happened, it starts buffering out all the printk's output to the console
But i did't remember, the code flow, at a particular point, the X or
the shell will take over of it...But any emergency msgs, from the kernel,
coming onto the Console only...
I think, for your error msg, you can better google it...Its not able to
the boot partition may be...
----- Original Message -----
From: "selvakumar nagendran" <kernelselva@xxxxxxxxx>
To: "srinivas naga vutukuri" <srinivas.vutukuri@xxxxxxxxx>
Sent: Tuesday, December 21, 2004 3:13 PM
Subject: Re: Printk output on console
> Hi srinivas,
> My question is "We are having lot more printk
> statements in the kernel source files. While the
> kernel is in execution where the output of all these
> statements will go? and can we redirect the output of
> printk to our console?
> Please help me. Also I have one more error after
> having compiled my new kernel 2.6.9. After booting it
> shows the following error
> "Kernel panic syncing unable to mount block(0,0) VFS
> specify root =LABEL correctly"
> Do u know how to deal with it?
> --- srinivas naga vutukuri
> <srinivas.vutukuri@xxxxxxxxx> wrote:
> > Hi Selva,
> > I understood the question as where all/what all
> > printks (with
> > line nos and the file names)
> > you are looking for is it. I think, in a normal
> > printf using the
> > macros __FILE__ and __LINE__ will give that...
> > ex:
> > printk(KERN_ERR "%s: Driver Initialisation failed",
> > __FILE__);
> > Is this helpful...
> > Regards,
> > srinivas.
> > -
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